Alex (Ariel Winter) is moving to Switzerland to work with Dr. Arvin Fennerman (guest star Chris Geere), and she's worried about the professionalism of them being involved romantically -- not that they are, just that it COULD happen. Arvin agrees, so they do their best to protect themselves, which potentially just sped up the process. From 'Finale, Parts 1 and 2,' the series finale of Modern Family. Watch Modern Family on ABC, streaming, on demand, and Hulu.